When's the Next Subway? Look Up.

Electronic next train signage has come to the New York Subway. Three experimental systems are currently being tested throughout the system, but locals say the kinks are still clearly being worked out.

It turns out the tracking and timing of subway trains is harder than one might think.

Michael M. Grynbaum writes, "The city's subway tracks are equipped with signals that follow trains through the system. That is why trains do not run into one another, or sometimes speed up or slow down to conform to schedules.

But it is hard to harness the information from those signals, and harder still to convert it into an approximate arrival time that can be displayed for passengers. Signals are not routed to a central processing center, so controllers cannot see an entire route at once, and GPS and wireless signals do not travel well underground."

Full Story: Experimental Clocks Tell Straphangers if the Wait May Soon Be Over

Comments

Build Your Own Paper Block City

Urban Fold is an all-inclusive kit that allows anyone to build the city of their dreams with a few simple folds.
$24.95
building block set

NEW! Build the world you want to see

Irresistible block set for adults when placed on a coffee table or desk, and great fun for kids.
$25
Book cover of Where Things Are from Near to Far

Where Things Are From Near to Far

This engaging children's book about planning illustrates that "every building has its place."
$19.95
Book cover of the Guide to Graduate Planning Programs 4th Edition

Thinking about Grad School?

The Planetizen Guide to Graduate Urban Planning Programs is the only comprehensive ranking and listing of graduate urban planning programs available.
Starting at $24.95